From: Is the use of preoperative breast MRI predictive of mastectomy?
MRI results | n | Lumpectomy | Ipsilateral mastectomy | Bilateral mastectomy |
---|---|---|---|---|
No MRI | 817 | 62% | 26% | 12% |
MRI | Â | Â | Â | Â |
  Normal | 259 | 66% | 17%c | 16% |
  Abnormal |  |  |  |  |
  Ipsilateral | 182 | 51%c | 34%c | 15% |
  Contralateral | 73 | 53% | 21% | 26%c |
  Both | 114 | 46%c | 23% | 31%c |
MRI biopsya | Â | Â | Â | Â |
  None | 132 | 39%c | 35%c | 26%c |
  Benign | 184 | 66% | 21% | 13% |
  Malignant |  |  |  |  |
  Ipsilateralb | 52 | 35%c | 38%c | 27%c |
  Contralateral | 15 | 33%c | 0c | 67%c |
  Both | 6 | 0c | 0 | 100%c |